Cecropia granvilleana
Type
Type. French Guiana. Montagne de Trinite, 18 Jan 1984 ([male]), Granville et al. 6000 (holotype: P; isotypes: BG, BR, CAY, G, NY, U).
Species Description
Tree, to 10 m tall, the trunk with prominent stipular scars. Leafy twigs 1.5-2 cm thick, green, puberulous to hispidulous, partly with uncinate hairs. Lamina chartaceous to subcoriaceous, ca. 25 × 25 cm to 40 × 40 cm, the segments 9-10, oblong to lanceolate, the incisions down to ca. 6/10-8/10; apices acute to subacuminate; upper surface scabrous to scabridulous, hispidulous; lower surface hirtellous to puberulous on the veins, with arachnoid indumentum in the areoles and on the smaller veins; lateral veins in the free part of the midsegment 9-10 pairs, marginally to submarginally loop-connected, unbranched or branched; petiole ca. 15-35 cm long, minutely puberulous; trichilia fused, the brown indumentum intermixed with 5-9 mm long white hairs; stipules 3-4 cm long, pink to dark red, puberulous to hirtellous and with sparse arachnoid indumentum outside, (sub)glabrous inside. Staminate inflorescences in pairs, erect; peduncle 8-9 cm long, sparsely puberulous; spathe 4-6 cm long, pale pink to yellow, sparsely puberulous to hirtellous and with sparse to rather dense arachnoid indumentum outside, glabrous inside; spikes 6-9, 2-4.5 × 0.3-0.4 cm, with stipes 0.3-0.4 cm long and sparsely hairy; rachis hairy. Staminate flowers: perianth tubular, 1-1.5 mm long, with arachnoid indumentum below the apex, the apex slightly convex to plane, glabrous; filaments flat; anthers ca. 0.5-0.8 mm long, detached at anthesis, reattached to the margins of the aperture by the appendages. Pistillate inflorescences in pairs, erect; peduncle 6-10 cm long, hispidulous; spathe ca. 5-8 cm long, the color and indumentum as in the staminate inflorescence; spikes 4(-6), (at anthesis) 4-7 × 0.5-0.8 cm, sessile; rachis glabrous. Pistillate flowers: perianth ca. 1.5 mm long, with arachnoid indumentum below the apex, the apex muriculate to sparsely minutely puberulous; stigma subpeltate. Fruit unknown.
Discussion
This species is known from only two localities and is found in small patches at bases of inselbergs. It shows affinities to Cecropia peltata.
Authority
Berg, Cornelius C. & Franco Rosselli, Pilar. 2005. Cecropia. Fl. Neotrop. Monogr. 94: 1--230. (Published by NYBG Press)
French Guiana.
On steep, wet slopes of granite rocks (inselbergs).